/*
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * The Original Code is RhinoDB, released August 08, 2008.
 * 
 * Contributor(s): Alexandru Chiculita.
 * Alternatively, the contents of this file may be used under the terms of
 * the GNU General Public License Version 2 or later (the "GPL"), in which
 * case the provisions of the GPL are applicable instead of those above. If
 * you wish to allow use of your version of this file only under the terms of
 * the GPL and not to allow others to use your version of this file under the
 * MPL, indicate your decision by deleting the provisions above and replacing
 * them with the notice and other provisions required by the GPL. If you do
 * not delete the provisions above, a recipient may use your version of this
 * file under either the MPL or the GPL.
 * 
 * ***** END LICENSE BLOCK ***** */

package org.achicu.db;

import java.util.HashMap;

import org.achicu.db.logics.CollectionLogic;
import org.achicu.db.logics.FloatSortedCollectionLogic;
import org.achicu.db.logics.IntegerSortedCollectionLogic;
import org.achicu.db.logics.StringSortedCollectionLogic;

public class CollectionLogicFactory {
	protected HashMap collectionLogicTypes = new HashMap();  
	
	private static CollectionLogicFactory instance;
	
	public static CollectionLogicFactory getInstance(){
		if(instance==null){
			instance = new CollectionLogicFactory();
		}
		return instance;
	}
	
	protected CollectionLogicFactory(){
		collectionLogicTypes.put(new Integer(Store.NO_INDEX), CollectionLogic.class);
		collectionLogicTypes.put(new Integer(Store.LONG_INDEX), IntegerSortedCollectionLogic.class);
		collectionLogicTypes.put(new Integer(Store.STRING_INDEX), StringSortedCollectionLogic.class);
		collectionLogicTypes.put(new Integer(Store.FLOAT_INDEX), FloatSortedCollectionLogic.class);
	}
	
	public CollectionLogic getCollectionLogicByType(Store store, int id, int type) throws InstantiationException, IllegalAccessException{
		Class objClass = (Class)collectionLogicTypes.get(new Integer(type));
		
		if( objClass == null)
			return null;
		
		CollectionLogic result = (CollectionLogic)objClass.newInstance();
		result.setCollectionId(id);
		result.setStore(store);
		
		return result;
	}
}
